Shuttle for embroidering-machines



,P. R. HAUSSLER. SHUTTLE FOR EMBROIDERING MACHINES.

APPLICATION FILED FEB. 1,1916- 1,39 9,056, Patented Dec. 6, 1921;

@ y W ?'W neon RICHARD HAussLEn, or PLAUEN, GERMANY.

SHUTTLE FOR EMBROIDERING-MACHINES,

Specification of Letters Patent.

Patented Bead, 1&21.

Application filed February .1, 1916. Serial No. 75,555.

seamen unnnnrnn raovrsrons or THE nor or MARCH 3, 1921,41 s'ra'r. L., 1313.)

T0 aZZ whom it army concer-nr Be 1t known that 1, PAUL RICHARD Hims- SLER, a sub ect cat the King or Saxony, and

residing at Plauen, in the German Empire,

have invented new and useful improve ments in Shuttles for Embroidering-Machines, (for which I have filed application in Germany Jan. 28, 1915,) ofwhich the following is a specification.

This invention relates to shuttles for embroidering machines and has for its object to provide for certain improvements in such shuttles. In manufacturing embroidery in embroidering machines having upward of one thousand embroidering needles in juxtaposition, it is preferable to use a longitudinal shuttle capable of supporting a large bobbin or spool. It is the object of my present invention to provide a shuttle of this type which owing to its novel structure allows of reliablysecuring the bobbin therein and results in an increased output of the machine. A machine equipped with the novel shuttle will be able to produce the most delicate embroidery.

Longitudinal shuttles such as hitherto used for supporting large bobbins are not very well applicable in embroidering nachines for producing valuable embroidered fabrics, for instance, very delicate embroidcry, since with shuttles of this class and having a lateral cover, an angular thread loop will be formed which is liable to have its thread worn or lacerated withinthe angular portions. On the other hand, in shutthe shuttle, so that in making embroidery it would happen that the fine thread be retained by the obstructions the interrupted surface offered, resulting in a breakage of the thread. In such cases, only shuttles without bulged side walls could be used, hitherto. And in order to obtain a larger space 1 within a shuttle of such a type a'make'shift was resorted to consisting in cutting away to some extent the inner faces of the side walls, which additional work, naturally, increased the cost of production of such shutbe introduced into the shuttle which, as regards their diameter, corresponded to the width of the inlet opening of the shuttle, while thicker bobbins containing a larger quantity of thread and, hence, requiring a less frequent renewal, couldnot at all be placed into the shuttle to such an extent that it was possible to close the cover. If, on the other hand, the shuttle were made larger andwider to allow of placing a thickerbobbin into it and yet closing the cover, a shuttle with too wide a guiding surface would result that does not fit the shuttle races of ordinary dimensions. If now, the shuttle races were made to fit such wider shuttles, this would necessitate embroidery needles of an increased length. Long embroidery needles, however, are accompanied by the drawback that they are'less steady'in consequence of their length and that the-point of the needle owing to the spring action of its free end portion is liable to vibrate and, hence, will not prick exactly inaccordance with the pattern but very often beside its proper place,

which inaccurate working results in the pro- .ClUCtlOll of an inferior quality of embroidery and an objectionable operation of the embroidering machine. Moreover, with all the shuttles usedbefore this time in embroidering machines, the further drawback had to be faced that the inserted bobbin couldieasily fall out again while the needle was being threaded or the thread tensioned, unless the bobbin is held in place by the fingers of the operator or by means of more or less complex machinery, to prevent the bobbin from falling out of the shuttle and simultaneously, to insure a proper position of the bobbin within the shuttle. As a result of the wide inlet opening of the shuttle, the bobbin is liable to get into an undesired position while being placed into the shuttle, 5r when the thread is being tensioned, and must then be moved toward the rear part of the shuttle interior and held there with the fingers before the cover of the shuttle can be properly closed. Otherwise, the bobbin not occupymg its proper position within the shuttle, it will be impossible to bring the cover into place since the latterlthen bears upon the bobbin. These are defect which cause loss of time and complicate the handling of the shuttle. tles and yet permitted only such bobbins to It is the object of my present invention to remove these drawbacks. This object I at tain by giving the side wall of the shuttle a bulge over the width of the inlet opening so that an interior shuttle space is obtained which is larger than the inlet opening. The introduction of a large spool or bobbin into the thus enlarged inner space of the shuttle is effected by forcing the bobbin through the contracted inlet opening. Once passed. through the contracted entrance, the bobbin lying spool in the proper position so that the latter is entirely prevented from falling out of the shuttle, and the cover can be closed unobstructed by the bobbin, whereupon the threading of the needle may be carried out in any convenient manner. By this invention the practical handling of the shuttle .is considerably simplified and rendered more convenient.

In the accompanying drawings, Ifhave illustrated an embodiment of my invention by way of example; Figure 1 showing the novel shuttle in a side view with the cover of the shuttle in the open position and a bobbin in the action of being forced though the inletopening of the shuttle. Fig. 2 is a top view'of a filled shuttle. Fig.3 is a transverse section through the shuttle shown in i Fig. 2. In Fig. 4; the novel shuttle is shown witha normal entrance width indicated in full lines and an enlarged entrance space indicated in chain lines. In Figs. 5 and 6 are shown shuttles of the old construction, Fig. 5 illustrating a shuttle with one of its side walls partly cut away or windowed, while in Fig. 6 an old shuttle is shown with an entrance of normal width 8 in full lines and an enlarged entrance width 8 in chain lines.

Referring to the drawings, 1 designates a large sized bobbin and 2 the inlet opening of the shuttle, which opening may be formed either in the normal manner by a pair of )arallel walls 8 indicated in full lines in *ig. 4, or by a pair of symmetrically curved walls with which the shuttle illustrated in Fig. 2 is shown to be provided and which are indicated by chain lines 8 in Fig. 4:; the curved entrance walls affording a wider passage for the bobbin. The inlet opening 2 of the shuttle is inclosed bya pair of continuous' guiding surfaces or tracks 4%. One of the side walls of the shuttle isprovided with a considerable bulge 3 for the accommodaminates in a part that is symmetrical, with respect to the longitudinal median plane of the shuttle race, to the opposite side wall of the shuttle which is not provided with a bulge; this part serving as the track of the shuttle. In order to. further increase the interior space of theshuttle and to decrease the depth of the latter, the bottom is milled away as shown at 7 in Figs. 1 and 3, or is thinned down to the desired extent bya pressing action. The inlet opening 2 is adapted to be closed by means of an ordi-- nary hinged cover 5 having an extended spring 6. This kind of cover has proved most satisfactory practical working. v

In introducing a large bobbin into the shuttle, the thick middle portion of the bobbin is being slightly pressed together and the bobbin then forced through the lateral entrance walls which are separated a width thatis less than themaximum diameter of the bobbin. As soon as the bobbin is in its place within the shuttle in which it is then freely lying, the natural elasticity of the thread body will cause the bobbin to expand to its normal size. Since the thickest p013 tion of the bobbin still projects into the space between the contracted entrance walls of the shuttle, the bobbin is held immovably in the proper position within the shuttle even before the cover is closed.

The thus constructed novel shuttle is capable of holding a considerable quantity of thread and to give the same out without causing trouble by becoming inoperative; thus an economical working of the embroids eringmachine is insured.

Various modifications may be made in the novel shuttle, for instance, the'side wall of the shuttle could be provided with. a slit along the guiding-face of the shuttle whereby the track part of the side wall or the inlet opening of the bobbin would be rendered resilient. The shape of the shuttle might be quite different from the one illustrated by way of example. The shuttle track or guiding face 4: may be provided with slightindentations or impressions in order to reduce the bearing surface of the shuttle. The improvements according to this invention may be provided on the right hand side or on the left hand side, or on both sides of the shuttle, whereby the novel shuttle would be applicable in various types of embroidering machines. 1

It is not at all requisite to enlarge the en-f trance 2 of the shuttle in the manner indicated by the chain lines 8 in Fig. 4, for even those bobbins which are sized in correspondence with the larger shuttle space can be passed through the narrow normal entrance determined by the lines 8 in Fig. 4.

One or all of these and other modifications not specifically mentioned, may be made without involving a departure from the scope and the spirit of my invention.

What I claim and desire to secure by Letters Patent of the United States, is:

l. A shuttle comprising a shuttle body provided with a continuous guiding face, all portions of which lie in the same plane, an inlet opening surrounded by said guiding face, and a bulge in the side wall of the shuttle beneath the guiding face portion of such side wall, said bulge being curved botn lengthwise of the shuttle and transversely thereof.

2. A shuttle comprising a shuttle body provided with guiding faces at opposite sides of its longitudinal center, said guiding faces being farther apart at the middle portion of the shuttle than toward its ends and being located at opposite sides of an inlet opening the width of which decreases from the transverse central line of the shuttle toward the ends, and a bulge in the side Wall of the shuttle beneath the guiding face of the respective side wall.

In testimony whereof I have hereunto aflixed my signature this twenty-eighth day of December, 1915.

PAUL RICHARD HAUSSLER; I

Witnesses:

ROBERT H. N IER, GENEVIEVE HENDRIOK. 

